I personally did not think the trees were that large when you drive through the park. I have seen much much larger in the Redwoods and in Sequoia Park
The White Pines(?) Lake just a few minutes south on hwy 4 is fanstastic. In late morning there is nice shade from some tall trees , including picnic tables, looking down the beach. The Sequoias and redwoods are tall and numerous !
I would check out the website, if I were you. You'll find all the answers to all your questions. I think you'll love it there.
Thanks! Your answer is awaiting moderation.